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[netCDF #WPL-663670]: Errors while compling C++ code with NETCDF

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  • Subject: [netCDF #WPL-663670]: Errors while compling C++ code with NETCDF
  • Date: Wed, 15 Aug 2018 14:23:46 -0600
Hello,

It looks like you probably aren't linking against the C++ interface for netCDF. 
 This is separate from the core C library, libnetcdf.  The good news is that it 
appears the C++ library, libnetcdf-cxx4.  Try linking your library against 
libnetcdf-cxx4 in addition to libnetcdf, and see if the issue is resolved.  If 
not, let me know!

Have a great day,

-Ward


> Hi,
> 
> I am quite new to Netcdf and trying to use it for my code. I have
> installed netcdf4 and c++, here the logs for nc-config —all
> 
> nc-config --all
> 
> This netCDF 4.6.1 has been built with the following features:
> 
> --cc        -> gcc
> --cflags    -> -I/usr/local/include -I/usr/local/include
> --libs      -> -L/usr/local/lib -lnetcdf
> 
> --has-c++   -> no
> --cxx       ->
> 
> --has-c++4  -> yes
> --cxx4      -> g++
> --cxx4flags -> -I/usr/local/include
> --cxx4libs  -> -L/usr/local/lib -lnetcdf_c++4 -lnetcdf
> 
> --has-fortran-> no
> --has-dap   -> no
> --has-dap4  -> no
> --has-nc2   -> yes
> --has-nc4   -> yes
> --has-hdf5  -> yes
> --has-hdf4  -> no
> --has-logging-> no
> --has-pnetcdf-> no
> --has-szlib -> no
> --has-parallel -> no
> --has-cdf5 -> yes
> 
> --prefix    -> /usr/local
> --includedir-> /usr/local/include
> --libdir    -> /usr/local/lib
> --version   -> netCDF 4.6.1
> 
> I am getting following errors while using it in a code (some of the
> errors I am copying here):
> 
> error: undefined reference to 
> 'netCDF::NcFile::NcFile(std::__cxx11::basic_string<char, 
> std::char_traits<char>, std::allocator<char> > const&, 
> netCDF::NcFile::FileMode)'
> 
> error: undefined reference to 
> 'netCDF::NcGroup::getVar(std::__cxx11::basic_string<char,
> 
> std::char_traits<char>, std::allocator<char> > const&, 
> netCDF::NcGroup::Location) const'
> 
> error: undefined reference to 'netCDF::NcVar::getVar(double*) const’
> 
> 
> Also, I saw that after installing the netcdf, the netcdf file change to
> a different symbol, but for my case its not. Please help me in this
> regard.
> 
> Thanks in advance.
> 
> Regards
> 
> Pawan
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: WPL-663670
Department: Support netCDF
Priority: Normal
Status: Closed
===================
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